11615321 has 8 divisors (see below), whose sum is σ = 12014784. Its totient is φ = 11222640.

The previous prime is 11615273. The next prime is 11615323. The reversal of 11615321 is 12351611.

11615321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11615321 - 2²² = 7421017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11615293 and 11615302.

It is not an unprimeable number, because it can be changed into a prime (11615323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1916 + ... + 5186.

It is an arithmetic number, because the mean of its divisors is an integer number (1501848).

Almost surely, 2^11615321 is an apocalyptic number.

It is an amenable number.

11615321 is a deficient number, since it is larger than the sum of its proper divisors (399463).

11615321 is an equidigital number, since it uses as much as digits as its factorization.

11615321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391.

The product of its digits is 180, while the sum is 20.

The square root of 11615321 is about 3408.1257312488. The cubic root of 11615321 is about 226.4698567972.

Adding to 11615321 its reverse (12351611), we get a palindrome (23966932).

The spelling of 11615321 in words is "eleven million, six hundred fifteen thousand, three hundred twenty-one".